Timer/timer_version2.html at main · lokafai/Timer · GitHub

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<!DOCTYPE html>
<html lang="zh-CN">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>LED风格计时器 - 版本2</title>
  <style>
    * {
      margin: 0;
      padding: 0;
      box-sizing: border-box;
    }

    body, html {
      width: 100%;
      height: 100%;
      background-color: black;
      color: red;
      font-family: 'Courier New', monospace;
      font-weight: bold;
      overflow: hidden;
    }

    .container {
      width: 100%;
      height: 100%;
      display: flex;
      flex-direction: column;
    }

    .timer {
      flex: 1;
      display: flex;
      justify-content: center;
      align-items: center;
      padding: 20px;
    }

    .timer-text {
      font-size: clamp(10vw, 20vw, 150px);
      text-align: center;
      width: 100%;
    }

    #timer1 {
      transform: rotate(180deg);
    }

    .controls {
      padding: 15px;
      background-color: black;
      border-top: 2px solid red;
      width: 100%;
    }

    .control-buttons {
      display: flex;
      justify-content: space-between;
      gap: 10px;
      margin-bottom: 15px;
      width: 100%;
    }

    .control-btn {
      padding: 12px 10px;
      border: 2px solid red;
      border-radius: 8px;
      background-color: black;
      color: red;
      font-size: 18px;
      cursor: pointer;
      flex: 1;
      text-align: center;
      min-width: 0;
    }

    .control-btn:active {
      background-color: red;
      color: black;
    }

    #setTimeBtn {
      display: none;
    }

    /* 分割线 - 横向拉满 */
    .divider {
      height: 2px;
      width: 100%;
      background-color: red;
      margin: 0 0 15px 0;
    }

    /* 弹窗样式 - 字体最大化 */
    .time-modal {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      background-color: rgba(0, 0, 0, 0.85);
      display: none;
      justify-content: center;
      align-items: center;
      z-index: 100;
    }

    .modal-content {
      background-color: black;
      border: 2px solid red;
      border-radius: 15px;
      padding: 30px 20px;
      width: 90%;
      max-width: 450px;
      display: flex;
      flex-direction: column;
      align-items: center;
      gap: 25px;
    }

    .modal-title {
      font-size: clamp(18px, 5vw, 28px);
      text-align: center;
      width: 100%;
    }

    .time-picker {
      display: flex;
      align-items: center;
      gap: 10px;
      width: 100%;
      justify-content: center;
    }

    .time-unit {
      display: flex;
      flex-direction: column;
      align-items: center;
      width: 42%;
    }

    .time-display {
      /* 优化容器尺寸 */
      height: clamp(100px, 35vw, 160px);
      width: 100%;
      overflow: hidden;
      position: relative;
      border: 2px solid red;
      border-radius: 8px;
    }

    .time-scroll {
      position: absolute;
      width: 100%;
      transition: transform 0.1s ease-out;
      left: 0;
      top: 0;
    }

    .time-scroll div {
      /* 字体最大化，占满整个方框 */
      font-size: clamp(8vw, 18vw, 90px);
      height: clamp(100px, 35vw, 160px);
      display: flex;
      align-items: center;
      justify-content: center;
      line-height: 1;
      white-space: nowrap;
      text-align: center;
      width: 100%;
      /* 消除任何可能的内边距和外边距 */
      margin: 0;
      padding: 0;
    }

    .unit-label {
      font-size: clamp(15px, 5vw, 22px);
      margin-top: 10px;
      font-weight: normal;
    }

    .colon {
      font-size: clamp(8vw, 18vw, 90px);
      display: flex;
      align-items: center;
      padding: 0 5px;
    }

    /* 返回按钮 */
    .back-button {
      position: fixed;
      top: 20px;
      left: 20px;
      padding: 10px 15px;
      border: 2px solid red;
      border-radius: 10px;
      background-color: black;
      color: red;
      text-decoration: none;
      font-size: 16px;
      z-index: 50;
    }

    .back-button:active {
      background-color: red;
      color: black;
    }
  </style>
</head>
<body>
  <a href="index.html" class="back-button">返回选择</a>

  <div class="container">
    <div class="timer" id="timer1">
      <div class="timer-text" id="timer1Text">00:00.00</div>
    </div>

    <div class="controls">
      <div class="control-buttons">
        <div class="control-btn" id="resetBtn">重置</div>
        <div class="control-btn" id="setTimeBtn">设置时间</div>
        <div class="control-btn" id="modeBtn">倒计时</div>
      </div>

      <!-- 横向拉满的分割线 -->
      <div class="divider"></div>
    </div>

    <div class="timer" id="timer2">
      <div class="timer-text" id="timer2Text">00:00.00</div>
    </div>
  </div>

  <!-- 时间选择弹窗 -->
  <div class="time-modal" id="timeModal">
    <div class="modal-content">
      <div class="modal-title">设置倒计时时间</div>
      <div class="time-picker">
        <div class="time-unit">
          <div class="time-display">
            <div class="time-scroll" id="minuteScroll"></div>
          </div>
          <div class="unit-label">分钟</div>
        </div>
        <div class="colon">:</div>
        <div class="time-unit">
          <div class="time-display">
            <div class="time-scroll" id="secondScroll"></div>
          </div>
          <div class="unit-label">秒钟</div>
        </div>
      </div>
    </div>
  </div>

  <script>
    // 状态变量
    let isRunning = false;
    let isCountdown = false;
    let startTime;
    let elapsedTime = 0;
    let countdownDuration = 0;
    let timerInterval;

    // DOM元素
    const timer1El = document.getElementById('timer1Text');
    const timer2El = document.getElementById('timer2Text');
    const resetBtn = document.getElementById('resetBtn');
    const modeBtn = document.getElementById('modeBtn');
    const setTimeBtn = document.getElementById('setTimeBtn');
    const timeModal = document.getElementById('timeModal');
    const minuteScroll = document.getElementById('minuteScroll');
    const secondScroll = document.getElementById('secondScroll');

    // 初始化时间选择器
    function initTimePickers() {
      // 创建分钟选项
      for (let i = 0; i < 60; i++) {
        const div = document.createElement('div');
        div.textContent = pad(i);
        minuteScroll.appendChild(div);
      }

      // 创建秒钟选项
      for (let i = 0; i < 60; i++) {
        const div = document.createElement('div');
        div.textContent = pad(i);
        secondScroll.appendChild(div);
      }

      // 强制计算布局后再设置初始位置，确保精确居中
      setTimeout(() => {
        setScrollPosition(minuteScroll, 0);
        setScrollPosition(secondScroll, 0);
      }, 0);

      // 添加滚动功能
      setupScroll(minuteScroll, 60);
      setupScroll(secondScroll, 60);
    }

    // 设置滚动功能
    function setupScroll(element, maxVal) {
      let startY;
      let startPos;
      let isDragging = false;
      // 动态获取项目高度，确保与显示匹配
      const itemHeight = () => parseInt(getComputedStyle(document.querySelector('.time-scroll div')).height);

      // 触摸/鼠标事件
      element.addEventListener('mousedown', startDrag);
      element.addEventListener('touchstart', startDrag, { passive: true });

      document.addEventListener('mousemove', drag);
      document.addEventListener('touchmove', drag, { passive: true });

      document.addEventListener('mouseup', endDrag);
      document.addEventListener('touchend', endDrag);

      function startDrag(e) {
        isDragging = true;
        startY = e.type === 'mousedown' ? e.clientY : e.touches[0].clientY;
        startPos = getScrollPosition(element);
        element.style.transition = 'none';
      }

      function drag(e) {
        if (!isDragging) return;
        const y = e.type === 'mousemove' ? e.clientY : e.touches[0].clientY;
        const diff = (startY - y) * 0.8;
        let newPos = startPos + diff;
        const maxPos = (maxVal - 1) * itemHeight();
        newPos = Math.max(0, Math.min(newPos, maxPos));
        element.style.transform = `translateY(-${newPos}px)`;
      }

      function endDrag() {
        if (!isDragging) return;
        isDragging = false;
        const currentPos = getScrollPosition(element);
        const nearest = Math.round(currentPos / itemHeight());
        setScrollPosition(element, nearest);
      }
    }

    // 获取滚动位置
    function getScrollPosition(element) {
      const transform = element.style.transform;
      if (!transform) return 0;
      return parseInt(transform.replace('translateY(-', '').replace('px)', '')) || 0;
    }

    // 设置滚动位置 - 确保精确居中并占满方框
    function setScrollPosition(element, index) {
      const itemHeight = parseInt(getComputedStyle(document.querySelector('.time-scroll div')).height);
      const pos = index * itemHeight;
      // 微调位置确保视觉上完全居中
      const containerHeight = parseInt(getComputedStyle(document.querySelector('.time-display')).height);
      const offset = (containerHeight - itemHeight) / 2;
      element.style.transition = 'transform 0.2s ease-out';
      element.style.transform = `translateY(-${pos - offset}px)`;
    }

    // 获取选中的时间
    function getSelectedTime() {
      const itemHeight = parseInt(getComputedStyle(document.querySelector('.time-scroll div')).height);
      const minute = Math.round(getScrollPosition(minuteScroll) / itemHeight);
      const second = Math.round(getScrollPosition(secondScroll) / itemHeight);
      return {
        minute,
        second,
        totalMs: (minute * 60 + second) * 1000
      };
    }

    // 更新计时器显示
    function updateDisplay(timeMs) {
      const minutes = Math.floor(timeMs / 60000) % 60;
      const seconds = Math.floor(timeMs / 1000) % 60;
      const ms = Math.floor((timeMs % 1000) / 10);
      const timeStr = `${pad(minutes)}:${pad(seconds)}.${pad(ms)}`;
      timer1El.textContent = timeStr;
      timer2El.textContent = timeStr;
    }

    // 切换弹窗显示
    function toggleModal(show) {
      timeModal.style.display = show ? 'flex' : 'none';
      // 显示弹窗时重新计算位置，确保居中
      if (show) {
        setTimeout(() => {
          setScrollPosition(minuteScroll, Math.round(getScrollPosition(minuteScroll) / parseInt(getComputedStyle(document.querySelector('.time-scroll div')).height)));
          setScrollPosition(secondScroll, Math.round(getScrollPosition(secondScroll) / parseInt(getComputedStyle(document.querySelector('.time-scroll div')).height)));
        }, 100);
      }
    }

    // 开始/暂停计时器
    function toggleTimer() {
      if (isRunning) {
        // 暂停
        clearInterval(timerInterval);
        if (!isCountdown) {
          elapsedTime = Date.now() - startTime;
        }
      } else {
        // 开始
        if (isCountdown) {
          if (countdownDuration <= 0) return;
          startTime = Date.now();
          timerInterval = setInterval(() => {
            const passed = Date.now() - startTime;
            const remaining = countdownDuration - passed;
            if (remaining <= 0) {
              clearInterval(timerInterval);
              updateDisplay(0);
              isRunning = false;
              countdownDuration = 0;
              return;
            }
            updateDisplay(remaining);
          }, 10);
        } else {
          startTime = Date.now() - elapsedTime;
          timerInterval = setInterval(() => {
            elapsedTime = Date.now() - startTime;
            updateDisplay(elapsedTime);
          }, 10);
        }
      }
      isRunning = !isRunning;
    }

    // 重置计时器
    function resetTimer() {
      clearInterval(timerInterval);
      isRunning = false;
      elapsedTime = 0;
      countdownDuration = 0;
      updateDisplay(0);
      setScrollPosition(minuteScroll, 0);
      setScrollPosition(secondScroll, 0);
    }

    // 切换模式
    function toggleMode() {
      isCountdown = !isCountdown;
      modeBtn.textContent = isCountdown ? '正向计时' : '倒计时';
      setTimeBtn.style.display = isCountdown ? 'block' : 'none';
      resetTimer();
    }

    // 设置倒计时时间
    function setCountdownTime() {
      const time = getSelectedTime();
      countdownDuration = time.totalMs;
      updateDisplay(countdownDuration);
      toggleModal(false);
    }

    // 数字补零
    function pad(num) {
      return num.toString().padStart(2, '0');
    }

    // 事件监听
    resetBtn.addEventListener('click', resetTimer);
    modeBtn.addEventListener('click', toggleMode);
    setTimeBtn.addEventListener('click', () => toggleModal(true));

    // 点击弹窗外部关闭并确认
    timeModal.addEventListener('click', (e) => {
      if (e.target === timeModal) {
        setCountdownTime();
      }
    });

    // 点击屏幕任意位置开始/暂停
    document.addEventListener('click', (e) => {
      // 忽略按钮和弹窗内部点击，以及返回按钮
      if (e.target.closest('.control-btn') || e.target.closest('.modal-content') || e.target.closest('.back-button')) {
        return;
      }
      toggleTimer();
    });

    // 初始化
    initTimePickers();
    updateDisplay(0);
  </script>
</body>
</html>